multiple tag edits in iTunes

right, by picking up mp3s from friends and so on i have now got about
17.000 songs in my iTunes library. the thing is, i want to start sorting out the
tags, for song titles, artists and album titles. is there any way i can do this
to multiple tracks at a time?
for example change the artist name for 10 tracks at once?
i haven't found anything of the sort and it's really frustrating trying to change them one at a time
thanks

Yup - highlight all the songs you want to change in one hit (either by clicking the top one and shift clicking the bottom one or by holding down the Apple key to highlight non-consecutive ones) then hit Apple key (Command) I (for info) and you'll be able to edit multiple tracks.

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